CVE-2024-50211Public exploit

Kernel memory corruption via mishandled UDF extent errors

Published Nov 8, 2024 · Updated Aug 5, 2026

Out-of-bounds access in the Linux UDF filesystem allows local users to corrupt kernel memory through a crafted image and ftruncate. inode_bmap conflates udf_next_aext errors with end of file, so udf_extend_file continues with invalid extent state derived from attacker-controlled UDF metadata. Exploitation requires mounting the crafted image and writing to a file on it; consequences include kernel-memory disclosure or corruption, a crash, or a hang.

CVSS severity7.8
High
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds access in the Linux UDF filesystem allows local users to corrupt kernel memory through a crafted image and ftruncate. inode_bmap conflates udf_next_aext errors with end of file, so udf_extend_file continues with invalid extent state derived from attacker-controlled UDF metadata. Exploitation requires mounting the crafted image and writing to a file on it; consequences include kernel-memory disclosure or corruption, a crash, or a hang.

The record

CVE
CVE-2024-50211
Published
Nov 8, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 8, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <493447dd8336607fce426f7879e581095f6c606e
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b22d9a5698abf04341f8fbc30141e0673863c3a6
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c226964ec786f3797ed389a16392ce4357697d24
  4. Affected versionversion=2.6.12

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <493447dd8336607fce426f7879e581095f6c606e; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b22d9a5698abf04341f8fbc30141e0673863c3a6; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c226964ec786f3797ed389a16392ce4357697d24; version=2.6.12

Published CVSS scores

3.3NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
7.8Linux Kernel CVE TeamCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.3CISA ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1068Exploitation for Privilege Escalation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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